:root {
  --ink: #1a1410;
  --paper: #f3ead7;
  --paper-deep: #e4d4b5;
  --brass: #c45c26;
  --brass-deep: #9a3f14;
  --smoke: #2c3a42;
  --mist: rgba(244, 234, 214, 0.72);
  --line: rgba(26, 20, 16, 0.14);
  --shadow: 0 24px 60px rgba(18, 12, 8, 0.28);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: #120e0b;
  line-height: 1.5;
}

.atmosphere {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 55% at 15% 10%, rgba(196, 92, 38, 0.35), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 20%, rgba(44, 58, 66, 0.55), transparent 50%),
    linear-gradient(160deg, #1c1612 0%, #2a2118 40%, #12161a 100%);
  z-index: 0;
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  opacity: 0.35;
  pointer-events: none;
}

.stage {
  position: relative;
  z-index: 1;
  width: min(720px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 4.5rem 0 5rem;
}

.brand {
  margin-bottom: 2rem;
  animation: rise 0.7s ease both;
}

.eyebrow {
  margin: 0 0 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: rgba(243, 234, 215, 0.7);
}

.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--paper);
  line-height: 0.95;
}

.lede {
  margin: 1rem 0 0;
  max-width: 34rem;
  color: rgba(243, 234, 215, 0.82);
  font-size: 1.05rem;
}

.brand-links {
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.65rem;
  align-items: baseline;
}

.brand-links-note {
  color: rgba(243, 234, 215, 0.55);
  font-size: 0.86rem;
}

.text-link {
  color: #e8b089;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.text-link:hover {
  color: #fff1c9;
}

.guide {
  width: min(760px, calc(100% - 2rem));
  padding-top: 3rem;
}

.guide-brand h1 {
  font-size: clamp(2.4rem, 8vw, 3.6rem);
}

.guide-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
  margin: 0 0 1.5rem;
}

.guide-toc a {
  color: rgba(243, 234, 215, 0.78);
  text-decoration: none;
  font-size: 0.86rem;
  border-bottom: 1px solid rgba(232, 176, 137, 0.35);
}

.guide-toc a:hover {
  color: #fff1c9;
}

.guide-card {
  background: rgba(243, 234, 215, 0.94);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.35rem 1.4rem 1.45rem;
  margin-bottom: 1rem;
  color: var(--ink);
}

.guide-card h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
}

.guide-card h3 {
  margin: 1.1rem 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.guide-card p,
.guide-card li {
  font-size: 0.98rem;
  line-height: 1.55;
}

.guide-card p {
  margin: 0 0 0.75rem;
}

.guide-card p:last-child {
  margin-bottom: 0;
}

.guide-card ol,
.guide-card ul {
  margin: 0 0 0.85rem;
  padding-left: 1.2rem;
}

.guide-card code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: rgba(26, 20, 16, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.guide-note {
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  background: rgba(196, 92, 38, 0.1);
  border: 1px solid rgba(196, 92, 38, 0.22);
}

.guide-steps li {
  margin-bottom: 0.35rem;
}

.guide-cta {
  margin-top: 1rem !important;
}

.guide-button {
  display: inline-block;
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
  background: var(--brass);
  color: #fff8ef !important;
  text-decoration: none !important;
  font-weight: 600;
}

.guide-button:hover {
  background: var(--brass-deep);
}

.guide-footer {
  margin: 1.5rem 0 0;
  color: rgba(243, 234, 215, 0.6);
  font-size: 0.88rem;
}

.ask {
  background: var(--mist);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
  box-shadow: var(--shadow);
  animation: rise 0.8s 0.08s ease both;
}

.ask textarea {
  width: 100%;
  border: 0;
  resize: vertical;
  min-height: 5.5rem;
  background: transparent;
  font: inherit;
  font-size: 1.05rem;
  color: var(--ink);
  outline: none;
}

.ask-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
}

button {
  font: inherit;
  cursor: pointer;
}

#ask-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1.35rem;
  background: var(--brass);
  color: #fff8ef;
  font-weight: 600;
  transition: transform 0.15s ease, background 0.15s ease;
}

#ask-btn:hover {
  background: var(--brass-deep);
  transform: translateY(-1px);
}

#ask-btn:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
}

.status {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(26, 20, 16, 0.65);
}

.examples {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 0;
  animation: rise 0.85s 0.12s ease both;
}

.examples button {
  border: 1px solid rgba(243, 234, 215, 0.28);
  background: rgba(18, 14, 11, 0.35);
  color: rgba(243, 234, 215, 0.9);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.examples button:hover {
  background: rgba(196, 92, 38, 0.28);
  border-color: rgba(196, 92, 38, 0.55);
}

.result {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
  animation: rise 0.55s ease both;
}

.notice {
  margin: 0;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: rgba(196, 92, 38, 0.18);
  border: 1px solid rgba(196, 92, 38, 0.35);
  color: var(--paper);
}

.answer,
.sources-block,
.passages-block,
.viz-block {
  background: rgba(243, 234, 215, 0.94);
  border-radius: 18px;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
}

.viz-block {
  background: linear-gradient(180deg, rgba(28, 22, 18, 0.96), rgba(18, 14, 11, 0.98));
  color: var(--paper);
  border-color: rgba(243, 234, 215, 0.12);
}

.viz-block h2 {
  color: var(--paper);
}

.viz-header {
  margin-bottom: 0.85rem;
}

.viz-sub {
  margin: 0.35rem 0 0;
  color: rgba(243, 234, 215, 0.72);
  font-size: 0.92rem;
}

.viz-canvas {
  position: relative;
  width: 100%;
  height: min(420px, 58vw);
  min-height: 280px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(243, 234, 215, 0.12);
  background:
    radial-gradient(ellipse at 30% 20%, rgba(196, 92, 38, 0.18), transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(47, 111, 106, 0.16), transparent 50%),
    #14100d;
}

.viz-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.viz-tooltip {
  position: absolute;
  z-index: 5;
  max-width: 240px;
  padding: 0.7rem 0.8rem;
  border-radius: 12px;
  background: rgba(20, 16, 13, 0.94);
  border: 1px solid rgba(243, 234, 215, 0.18);
  color: rgba(243, 234, 215, 0.92);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  pointer-events: none;
  font-size: 0.8rem;
  line-height: 1.35;
}

.viz-tooltip strong {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 0.15rem;
}

.viz-tip-section,
.viz-tip-score {
  display: block;
  color: rgba(243, 234, 215, 0.7);
}

.viz-tip-score {
  color: #e8b089;
  margin-top: 0.2rem;
  font-weight: 600;
}

.viz-tooltip p {
  margin: 0.45rem 0 0;
  color: rgba(243, 234, 215, 0.78);
}

.viz-tooltip.is-loading {
  opacity: 0.8;
}

.viz-meta {
  margin: 0.75rem 0 0;
  font-size: 0.86rem;
  color: rgba(243, 234, 215, 0.78);
  line-height: 1.45;
}

.viz-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  margin-top: 0.75rem;
}

.viz-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: rgba(243, 234, 215, 0.75);
}

.viz-legend-item i {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  display: inline-block;
}

.viz-legend-item.muted {
  opacity: 0.65;
}

.result h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
}

#answer {
  white-space: pre-wrap;
}

#sources {
  margin: 0;
  padding-left: 1.1rem;
}

#sources a {
  color: var(--brass-deep);
}

.chunk {
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}

.chunk:first-child {
  border-top: 0;
  padding-top: 0;
}

.chunk-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
  color: var(--smoke);
}

.chunk-meta strong {
  color: var(--ink);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .stage {
    padding-top: 2.5rem;
  }

  .ask-row {
    flex-direction: column;
    align-items: stretch;
  }
}